Martina McBride joined pop star Bryan Adams on the stage of the Ryman Auditorium in Nashville on Sunday night (Jan. 11) after he spotted her in the audience and invited her to come up. After she worked her way through the backstage area, McBride helped him perform "It's Only Love," a duet Adams originally recorded with Tina Turner for his 1984 album, Reckless. Midway through the song, she exclaimed, "I can't believe I'm singing with Bryan Adams!" Adams is currently on a solo acoustic tour. This was his first time to perform at the Ryman.